Malicious PDF — malware analysis report

Static analysis result for SHA-256 121472eb3abf8ddd…

MALICIOUS

PDF

66.9 KB Created: 2020-12-18 20:57:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1e7950ed4e32faa33b2ee7a347be5440 SHA-1: 175e79e1c97f1d317f8baad0f9feb5e09212ed66 SHA-256: 121472eb3abf8ddd3798399afc841f9d97efaa56a95abd23a560ae5434cd653f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The primary suspicious URL identified is trafftec.ru, which is likely part of a link farm designed to distribute malware or facilitate phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafftec.ru/strik?utm_term=fern+creek+elementary+website PDF link annotation
    • https://sogatetemurus.weebly.com/uploads/1/3/4/3/134379625/kodezixubatodow_pubabelerafew.pdfIn PDF document text
    • https://mepafuxutare.weebly.com/uploads/1/3/4/6/134660934/1816054.pdfIn PDF document text
    • https://kowawixuru.weebly.com/uploads/1/3/4/5/134509215/molivitim_boxobudetu.pdfIn PDF document text
    • https://nojefawagalubab.weebly.com/uploads/1/3/4/2/134266261/tigisuritonuvi_genozaxapameji_gifosalapom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc12f0cbe9b6939510c9a47/t/5fd20a62871f8c6e59625425/1607600745134/home_remedies_for_muscular_pain_in_shoulder.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f387555f-5a02-40b2-90c8-aabbbfce8455/26523575384.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c9cadc5-a614-4548-8ef4-1c332b9874f7/95784686511.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/xoxurasi.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/avast_premium_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/29692760326.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/sozalawaxusowunuwazitopev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9599bbde-7d21-4ddd-a769-cf55526da9d7/52785646513.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/ankylosing_spondylitis_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f32bea27-655f-4dfd-b905-e0f154487be3/3_point_sling_ak_47.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4e0d9ee0f32b874a1c87/1606372878885/does_lemon_water_break_a_fast_dr_berg.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/sawewiwedegokalotikabu.pdfIn PDF document text
    • https://s3.amazonaws.com/newopetusam/likes_and_followers_for_instagram_apk.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E6 5300 bytes
SHA-256: 4b6a4e1549fbfe0a6f1f36b924f3942975345fd96937ad2a8646d061161c7303
font_01_sfnt_off0000daf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF1 10520 bytes
SHA-256: aa733866279f16fb4202dae2347cfb9c7f9db699dd813bea8abda4f71b92eab2

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